32% light passage minimum, with 20% light reflectivity maximum, on any window. The top 6" of the windshield may be tinted as much as 32% light passage.
The exceptions are rear windows on buses, limos, and vans owned by schools or churches. Government vehicles also have a complete exemption from the rule.
Reinstated May 2005. Not even news any more. If you don't like it then write your state reps and Sonny and tell them that they're idiots and you won't be voting for them again.
Oh, and there is no distinction made by the current law differentiating trucks and cars. Application varies based on the officer and judge "interpreting" the law, but overall it's pretty clear. 32% all the way around with the windshield clear except at the top. Pretty standard stuff. Oh, and you can't have red tint.
Edit again, to add a
link Includes the text of the current law, including the code citation, easy to read. See section C for exemptions which do not include the rear window of trucks.